In the remote depths of the Australian seafloor, researchers have discovered a creature that seems almost alien: the Carnarvon flapjack octopus (Opisthoteuthis carnarvonensis). Distinguished by eyes so large they dominate its small head and striking crimson tentacles, this tiny deep-sea octopus measures just four centimeters across, yet it makes a big impression.
The species was identified during a 2022 deep-ocean expedition aboard the research vessel Investigator, operated by Australia’s CSIRO. It is the tenth new octopus species described from this ambitious mission, highlighting the incredible biodiversity lurking in the uncharted deep.
Scientists observed that its massive eyes allow it to navigate in near-total darkness, detecting the faintest glimmers of light. Its blood-red tentacles likely serve a dual purpose: blending into the surrounding bioluminescent waters while deterring predators with their vivid hue.
DNA analysis confirmed that this octopus belongs to no previously known subgroup, suggesting it evolved in isolation at extreme depths. “The deep ocean continues to surprise us,” said one marine biologist. “Each discovery reveals how evolution takes unique and unexpected paths under such harsh conditions.”
The team hopes to study its behavior, diet, and interactions in its deep-sea environment, providing rare insights into ecosystems far beyond the reach of sunlight. The Carnarvon flapjack octopus is a vivid reminder that even in the vast ocean, nature’s creativity knows no limits.
